/// <summary>

        /// ajax上传用户头像

        /// </summary>

        /// <param name="uploadedFile"></param>

        /// <returns></returns>

        [HttpPost]

        public string AjaxUploadAvatar(HttpPostedFileBase uploadedFile)

        {

            string message = string.Empty;

            var customer = _workContext.CurrentCustomer;

            try

            {

                var customerAvatar = _pictureService.GetPictureById(customer.GetAttribute<int>(SystemCustomerAttributeNames.AvatarPictureId));

                if ((uploadedFile != null) && (!String.IsNullOrEmpty(uploadedFile.FileName)))

                {

                    int avatarMaxSize = _customerSettings.AvatarMaximumSizeBytes;

                    if (uploadedFile.ContentLength > avatarMaxSize)

                    {

                        message = string.Format(_localizationService.GetResource("Account.Avatar.MaximumUploadedFileSize"), avatarMaxSize);

                        return message;

                    }

                    byte[] customerPictureBinary = uploadedFile.GetPictureBits();

                    if (customerAvatar != null)

                        customerAvatar = _pictureService.UpdatePicture(customerAvatar.Id, customerPictureBinary, uploadedFile.ContentType, null, true);

                    else

                        customerAvatar = _pictureService.InsertPicture(customerPictureBinary, uploadedFile.ContentType, null, true);

                }

                int customerAvatarId = 0;

                if (customerAvatar != null)

                    customerAvatarId = customerAvatar.Id;

                _genericAttributeService.SaveAttribute(customer, SystemCustomerAttributeNames.AvatarPictureId, customerAvatarId);

                message = _pictureService.GetPictureUrl(

                        customer.GetAttribute<int>(SystemCustomerAttributeNames.AvatarPictureId),

                        _mediaSettings.AvatarPictureSize,

                        false);

                return "1|" + message;

            }

            catch (Exception exc)

            {

                message = exc.Message;

                return message;

            }

        }

<script src="http://malsup.github.com/jquery.form.js" type="text/javascript"></script>

@using (Html.BeginForm("AjaxUploadAvatar", "Customer", FormMethod.Post, new { enctype = "multipart/form-data", id = "formUploadImg" }))

{

    <div class="theme-popover-mask"></div>

    <div class="theme-popover">

        <div class="message-error">

            @Html.ValidationSummary(true)

        </div>

        <div class="theme-poptit">

            <a href="javascript:;" title="关闭" class="close">×</a>

            <h3>修改您的头像</h3>

        </div>

        <div class="theme-popbod dform">

            <div class="upload_left">

                @if (!String.IsNullOrEmpty(Model.AvatarUrl))

                {

                    <img src="@(Model.AvatarUrl)" alt="avatar" />

                }<p>当前头像</p>

            </div>

            <div class="upload_right">

                <h3>请选择您电脑上的图片：</h3>

                <input name="uploadedFile" id="uploadedFile" type="file" />

                <input type="submit" id="btnUploadImg" name="upload-avatar" class="button-1 upload-avatar-button" value="@T("Common.Upload")" />

                @if (!String.IsNullOrEmpty(Model.AvatarUrl))

                {

                    <input type="submit" name="remove-avatar" class="button-2 remove-avatar-button" value="@T("Account.Avatar.RemoveAvatar")" />

                }

                <div id="progress" style="display: none">

                    <div id="bar">图片正在上传请稍等.....</div>

                </div>

                <br />

                <div id="message"></div>

                <input type="hidden" value="0" id="hidIsUpLoadimg" />

                <p>@T("Account.Avatar.UploadRules")</p>

            </div>

        </div>

    </div>

}

<script type="text/javascript">

    $(document).ready(function ($) {

        $('.user_infor img').click(function () {

            popupCon();

        });

        $('.theme-poptit .close').click(function () {

            popupBtn();

        });

        $(document).ready(function () {

            var options = {

                beforeSend: function () {

                    $("#progress").show();

                },

                success: function () {

                    $("#progress").hide();

                },

                complete: function (response) {

                    if (response.responseText.split('|')[0] == "1") {

                        $("#hidIsUpLoadimg").val(response.responseText);

                        $("#message").html("<font color='green'>图片上传成功,请刷新当前页面.</font>");

                    }

                },

                error: function () {

                    $("#message").html("<font color='red'>上传图片出错,请重新上传!</font>");

                }

            };

            $("#formUploadImg").ajaxForm(options);

        });

    });

</script>